JP2003072817A - Mouth-plug housing opening blade for thickening - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mouth plug housing an opening blade for thickening exactly bonding a sealing film on a lower surface of a spout by means of an ultrasonic sealing method without causing deformation, showing stable cutting condition of the sealing film with the opening blade and causing no leak of liquid during re-sealing. SOLUTION: In the mouth plug 10 housing the opening blade for thickening a cut 112 for an inner ring is mounted in an inner circumferential surface of an upper edge portion of a pouring out cylinder 110 of the spout 100, a cut 123 for a pool of a molten resin is mounted in an inner circumferential surface of a lower edge portion of a circular pedestal 120, a lower surface of an inner side of a vibration absorbing circular groove is located at a position lower than the lower surface of the outside of the vibration absorbing circular groove 122 of the circular pedestal, an inner ring 211 is mounted at a position opposing to the cut for the inner ring of the inner circumferential surface of the top edge portion of the pouring out cylinder of the spout in a lower surface of a ceiling plate 210 of a cap 200 and a contact ring 212 is arranged at a position opposing to the upper surface of the pouring out cylinder of the spout so that it is connected to the outside of the upper end of the outer circumference of the inner ring.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to sake, fruit juice beverage,
The present invention relates to a stopper with a built-in opening blade that projects from the top of a liquid paper container used for seasonings and the like.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3 (a), a liquid paper container (20) has a rectangular columnar body (21), and a gable roof top sloping plate (22). For the sake of ease of pouring, the one having the opening plug with a built-in blade (10) provided in a protruding manner has been used in a wide range of product fields. As shown in FIG. 3 (b), for example, as shown in FIG.
A plurality of triangular opening blades (310) are provided at the lower end of the blade (31).
1) The vertically opened unsealing tubular body (300) is built into the spout (100) (spouting device) inside the pouring tube (110) so that it can be lowered, and the cap (200) screwed to the spout.
When the screw is rotated in the unscrewing direction, the spiral sliding contact guide inclined surface provided on the outer peripheral surface of the inner guide tube vertically installed at the center position of the top plate of the cap and the inner surface of the opening cylinder. The unsealing tubular body (300) is lowered by the sliding contact with the spiral slidable contact guide inclined surface provided on the peripheral surface, and the liquid sheet is opened by the unsealing blade (310) provided at the lower end of the unsealing tubular body. It is known that the sealing film (400) for sealing the container is broken and opened. It should be noted that the provision of the cutting edge portion is to prevent the broken pieces (401) of the sealing film from falling into the content (30). And, this opening blade built-in plug (10)
As shown in FIG. 3 (a), the spout (100) is sealed with a sealing film (400) which is heat-sealed on the lower surface of the spout (100), and the spout (100) is sealed with a spout mounting hole of the liquid paper container (20). The dispensing cylinder (110) is projected to (23), the upper surface of the flange (121) is heat-fused to the inner surface of the container to be attached by fusion, and the sealing film of the liquid paper container is used for sealing. There is an external attachment that attaches the lower surface of the spout flange by heat fusion to the upper surface of the outer peripheral edge portion of the stopped pouring hole.

[0003]

By the way, when the sealing film is heat-sealed and adhered to the lower surface of the spout by the ultrasonic sealing method, pinholes are generated in the sealing film due to concentration of ultrasonic vibration energy. In order to prevent this, a vibration absorbing annular groove was provided on the lower surface of the spout. However, if the lower surface of the inside of the vibration absorbing annular groove of the spout and the sealing film are not sufficiently adhered, the sealing performance cannot be maintained, which may cause liquid leakage, and the cap may be lowered by the rotation of the cap in the screw releasing direction. When the sealing film was ruptured by the unsealing blade at the tip of the unsealing cylinder, the elongation width of the sealing film increased, and the rupture strength sometimes varied. Therefore, when the pressure of the horn is increased in order to ensure the adhesion between the lower surface inside the vibration absorbing annular groove of the spout and the sealing film, the lower surface of the spout is on the same plane, so the flange portion with a thin wall thickness However, it was sometimes deformed.

Further, when the cap is screwed on and resealed after opening, since the structure of the opening blade built-in stopper is complicated,
As a method of sealing the cap with the spout, the tip of the contact ring provided on the lower surface of the top plate of the cap is brought into close contact with the upper surface of the spout dispensing tube. Therefore, a problem may occur in the resealing sealing property.

The present invention solves the above-mentioned problems of the conventional internal-opening-blade-incorporating opening-plug, in which the sealing film is securely adhered to the lower surface of the spout without deformation by the ultrasonic sealing method to seal the sealing film. (EN) Provided is a stopper with a built-in opening blade for internal installation, which is stable in the state of breakage by the opening blade of the film, and has no risk of liquid leakage when resealing.

[0006]

That is, the first aspect of the present invention
The invention comprises a spout projecting internally from a spout mounting hole of a liquid paper container and a cap screwed onto the spout, and the spout enables the opening cylinder to move inside the spout cylinder. A sealing film is attached to the lower surface of the annular pedestal part that has a built-in flange on the outer peripheral surface of the lower end and a vibration absorbing annular groove on the lower surface side to seal the opening on the lower surface of the spout and screw the cap. When rotated in the detaching direction, the unsealing cylinder having an unsealing blade at the lower end inside the spout cylinder of the spout descends as the cap rotates, and breaks and opens the sealing film. In the plug with a built-in opening blade for internal attachment, a notch for the inner ring having a rectangular cross section is provided on the inner peripheral surface of the upper end of the spout's spout cylinder, and a molten resin pool is formed on the inner peripheral surface of the lower end of the annular pedestal. For notch,
From the lower surface position outside the vibration absorbing annular groove of the annular pedestal portion, the lower surface inside the vibration absorbing annular groove is provided at a lower position, and on the lower surface of the top plate of the cap, the inner peripheral surface of the upper end portion of the spout tube of the spout An inner ring is provided at a position opposite to the notch for the inner ring, and the inner ring is continuously provided outside the outer peripheral upper end of the inner ring, and a contact ring is provided at a position opposite to the upper surface of the spout barrel. It is a plug with a built-in opening blade for attachment.

Next, a second invention of the present invention is characterized in that a cross section of a notch provided in an inner peripheral surface of a lower end portion of the annular pedestal portion of the spout is a right triangle. It is a plug with a built-in opening blade for internal attachment as described in.

Next, a third invention of the present invention is the first invention, characterized in that the cross-section of the notch provided in the inner peripheral surface of the lower end portion of the annular pedestal portion of the spout is quadrangular. It is a plug with a built-in opening blade for internal attachment.

According to a fourth aspect of the present invention, the inner lower surface of the vibration absorbing annular groove of the annular pedestal portion is provided at a lower position within a range of 0.05 to 0.1 mm from the outer lower surface position of the vibration absorbing annular groove. The opening stopper with a built-in opening blade according to any one of the first to third inventions.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the opening stopper with a built-in opening blade of the present invention will be described in detail with reference to the drawings. FIG. 1A is a cross-sectional view when a cap is screwed on the spout of the opening blade with internal opening blade according to the embodiment of the present invention, and FIG. 1B shows a sealing film on the lower surface of the spout. It is sectional drawing which bonded. FIG. 2A is a sectional view when a cap is screwed on the spout of the opening blade with a built-in opening blade according to another embodiment of the present invention, and FIG. It is sectional drawing which bonded the film. Figure 3
(A) is explanatory drawing which shows the state before unsealing of the liquid paper container which attached the internal opening opening blade built-in stopper of an example,
(B) is an explanatory view showing a state when opened.

As shown in FIG. 3 (a), the opening plug (10) with a built-in openable blade of the embodiment of the present invention has an openable blade (31).
A spout (100) containing a liquid paper container (2)
The cap (200) is screwed onto the spout, and the spout (100) is shown in FIGS. 1 (a) and 2 (a). As shown in FIG. 3, a spout cylinder (110) is erected on the upper surface of the inner peripheral edge of the annular pedestal part (120), and a screw part (111) with the cap is provided on the outer peripheral surface of the spout cylinder. An inner ring notch (112) having a quadrangular cross-sectional shape is provided on the inner peripheral surface of the upper end portion, and usually eight sliding vertical ribs (130) with the unsealing cylinder are circumferentially formed on the inner peripheral surface. The vibration absorbing annular groove (122) is provided circumferentially in the middle of the lower surface of the annular pedestal portion (120) in the left-right direction, and the lower surface is lower than the vibration absorbing annular groove of the annular pedestal portion on the lower peripheral surface. A flange (121) is provided on the same plane as the outside, and the lower surface inside the vibration-absorbing annular groove is the lower surface outside the vibration-absorbing annular groove. Lower position than location provided (h only), and the lower end portion inner peripheral surface, which provided the notches reservoir molten resin (123), cap (200)
Is usually a plurality of sliding contact guide inclined surfaces (2) facing each other for lowering the unsealing cylinder at the center of the lower surface of the top plate (210).
31) The guide inner cylinder (230) provided on the outer peripheral surface at equal intervals in the circumferential direction is vertically provided, and the outer peripheral surface is located at a position facing the notch (112) for the inner ring of the spout, and the outer peripheral surface is a spout dispensing cylinder. Inner ring (211) that closely contacts the inner surface of the tip of the
And place the contact ring (21
2) are continuously provided, and a screwing part (221) with the spout is provided on the inner peripheral surface of the peripheral wall (220). The unsealing cylinder (300) is slidably contacted with the cap on the inner peripheral surface. Usually, a plurality of sliding contact guide slopes (301) corresponding to the guide slopes
Are provided at equal intervals in the circumferential direction, and usually four sliding protrusions (320) are provided at the upper end of the outer peripheral surface at equal intervals in the circumferential direction, and on the lower face of the lower end, as shown in FIG. A plurality of opening blades (310) having a triangular shape are provided in a notch portion (311) and are vertically provided in the circumferential direction. Then, the spout (10
As shown in FIGS. 1 (b) and 2 (b), the sealing film (400) is thermally fused and adhered to the lower surface of (0) by the ultrasonic sealing method. The spout is produced by an injection molding method using a thermoplastic resin such as polyethylene in accordance with the purpose of use, and the cap is made of a thermoplastic resin such as polypropylene in accordance with the purpose of use. It is manufactured by an injection molding method. In addition, the sealing film usually uses a barrier laminate film having a barrier film as an intermediate layer and a spout and a resin film layer capable of heat fusion as an inner and outer layer.

Annular pedestal (120) of the spout described above
The cross-sectional shape of the notch (123) provided on the inner peripheral surface of the lower end portion is a right triangle shape shown in FIG. 1 (b) or a quadrangular shape shown in FIG. 2 (b).

Further, the inner lower surface of the vibration absorbing annular groove of the annular pedestal portion is 0.05 to 0.1 from the outer lower surface position of the vibration absorbing annular groove.
It is provided at the lower position (only h) within the range of mm.
When the thickness is 0.05 mm or less, heat fusion between the lower surface on the inner side of the vibration absorbing annular groove and the sealing film may be incomplete.
If the thickness is 1 mm or more, the amount of the molten resin increases, and the molten resin may come into contact with the opening cylinder to hinder the operation of the opening cylinder.

[0014] The plug with a built-in opening blade for internal attachment of the present invention has a lower surface inside the vibration absorbing annular groove of the annular pedestal when the sealing film is heat-sealed and adhered to the lower surface of the spout by the ultrasonic sealing method. Is located below the lower surface of the vibration absorbing annular groove (including the lower surface of the flange), the lower surface inside the vibration absorbing annular groove begins to heat-bond under strong pressure first, and then to the spout. The entire lower surface is heat-sealed under a proper pressure.
As a result, the adhesion with the sealing film on the lower surface inside the vibration absorbing annular groove is complete, there is no variation in the breaking strength of the sealing film by the unsealing cylinder, and the thin flange portion may be deformed. There is no. Further, the molten resin (124) on the lower surface inside the vibration absorbing annular groove generated by heat fusion
As shown in FIGS. 1 (b) and 2 (b), since is housed in the vibration absorbing annular groove (122) and the notch (123) for pooling the molten resin, it comes into contact with the unsealing tubular body for unsealing. It does not hinder the operation of the cylinder.

When the container is opened and then resealed with a cap, as shown in FIGS. 1 (a) and 1 (b),
An inner ring (211) provided at a position facing the inner ring notch (112) of the spout (100) on the lower surface of the top plate (210) of the cap (200), and a spout for pouring outside the outer peripheral upper end of the inner ring. Outlet (11
0) The contact ring (21
2) Unlike the conventional sealing method using only a contact ring, in order to firmly seal the upper end opening of the spout's spout tube, after re-sealing, liquid leakage from the spout There is no fear of.

[0016]

EFFECTS OF THE INVENTION The internal opening blade-incorporating plug of the present invention has a special shape on the lower surface of the spout, so that the sealing film is securely bonded to the lower surface of the spout by the ultrasonic sealing method without deformation. The breaking state of the sealing film due to the opening blade is stable, and the cap has an inner ring and a contact ring by making the upper end opening of the spout's spout barrel a special shape. , There is no risk of liquid leakage from the mouth plug after resealing.

[Brief description of drawings]

FIG. 1 (a) is a cross-sectional view showing a structure of a spout of an opening blade with a built-in opening blade according to an embodiment of the present invention when a cap is screwed on, and FIG. 1 (b) is a bottom view of the spout. It is sectional drawing which shows the state which stuck the sealing film to.

FIG. 2 (a) is a cross-sectional view showing a structure when a cap is screwed onto the spout of the opening blade for internal opening of another embodiment of the present invention, and FIG. 2 (b) is a spout. FIG. 3 is a cross-sectional view showing a state in which a sealing film is bonded to the lower surface of the.

FIG. 3 (a) is an explanatory view showing a state before opening of a liquid paper container to which an example of a mouthpiece-containing opening blade built-in stopper is attached, and FIG. 3 (b) is an illustration showing a state when opened. It is a figure.

[Explanation of symbols]

10 ... Mouth plug 20 ... container 21 ... Body 22 ... Top sloping plate 23 ... Plug mounting hole 30 …… Contents 100 ... spout 110 ... Dispenser 111,221 …… Screwed part 112, 123 ... Notches 120 ... Ring base 121 …… Flange 122 ... Vibration absorbing annular groove 124: Molten resin 125 ... Temporary fixing protrusion 130 ... Sliding contact vertical rib 200 …… Cap 210: Top plate 211 ... Inner ring 212 …… Contact ring 220 ... Surrounding wall 230 …… Inner cylinder for guide 231, 301 ... Sliding contact guide inclined surface 300 ... Opening cylinder 310 ... Opening blade 311 ... missing edge 320 ... sliding protrusion 400 ... Sealing film 401 ... Fragment

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Claims (4)

[Claims] 1. A spout projecting internally from a spout mounting hole of a liquid paper container and a cap screwed onto the spout, wherein the spout is capable of moving an unsealing cylinder inside a spout cylinder. Built in the bottom surface of the annular pedestal part, which has a flange on the outer peripheral surface of the lower end and a vibration absorbing annular groove on the lower surface side, a sealing film is adhered to seal the opening on the lower surface of the spout, and the cap is attached. When rotated in the unscrewing direction, the unsealing tubular body having an unsealing blade at the lower end inside the spout barrel of the spout descends as the cap rotates, breaking the sealing film and unsealing. In the internal stopper with a built-in opening blade, the inner peripheral surface of the upper end portion of the spout's spouting tube is provided with a notch for the inner ring having a rectangular cross section, and the molten resin is formed on the inner peripheral surface of the lower end portion of the annular pedestal portion. A notch for the pool is provided,
From the lower surface position outside the vibration absorbing annular groove of the annular pedestal portion, the lower surface inside the vibration absorbing annular groove is provided at a lower position, and on the lower surface of the top plate of the cap, the inner peripheral surface of the upper end portion of the spout tube of the spout An inner ring is provided at a position opposite to the notch for the inner ring, and the inner ring is continuously provided outside the outer peripheral upper end of the inner ring, and a contact ring is provided at a position opposite to the upper surface of the spout barrel. A stopper with a built-in opening blade for attachment. 2. A spigot with a built-in opening blade for internal attachment according to claim 1, wherein the notch provided in the inner peripheral surface of the lower end portion of the annular pedestal portion of the spout has a right triangle shape in cross section. 3. A plug according to claim 1, wherein the cutout provided in the inner peripheral surface of the lower end portion of the annular pedestal portion of the spout has a quadrangular cross section. 4. The lower surface inside the vibration-absorbing annular groove of the annular pedestal is 0.05 to 0.1 m from the outer lower surface position of the vibration-absorbing annular groove.
The opening stopper with a built-in opening blade according to claim 1, wherein the stopper is provided at a lower position within a range of m.